DDR2 And extreme voltage....the simple facts

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11-24-2006, 04:22 PM
Revv23

Quote:

Originally Posted by Nosfer@tu

That is why we love the Hipro 5 maximizer :D

We can lower voltage from 2.7 - 2.5 and still get same results :D

Or 1 dude could

Speaking of that, just got my maximizer, and i havent overclocked one bit yet - BUT my memory previously would not boot spd with less then 2.1v and im running 100% stable at 1.85v right now. ;) A good start to say the least.
11-24-2006, 07:09 PM
Praxis1452

so 2.2v is deemed safe but is there any guestimate to how fast the ram will die when exposed to 2.4v-2.5v 24/7 when cooled adequatley?
11-24-2006, 07:14 PM
dinos22

Quote:

Originally Posted by FUGGER

For my 24/7 system I keep the ram under 2.2v.

yeah i run mine at 2.1v but the temptation to go to 2.7-2.8v for SPI benching is strong...........i wouldn't want to kill these sticks so they are staying up to 2.5v :(
11-24-2006, 08:08 PM
metro.cl

true, but i'll say 2.6v is the edge
11-25-2006, 03:06 AM
Nosfer@tu

Quote:

Originally Posted by Revv23

Speaking of that, just got my maximizer, and i havent overclocked one bit yet - BUT my memory previously would not boot spd with less then 2.1v and im running 100% stable at 1.85v right now. ;) A good start to say the least.

That is NICE :D
11-25-2006, 04:30 AM
Lastviking

This is why i love my bh5 sticks they want more and more vdimm :D
11-25-2006, 06:15 AM
HungryForHertz

We should get manufacturers on this.
11-25-2006, 08:45 AM
Tony

Quote:

Originally Posted by HungryForHertz

We should get manufacturers on this.

and say what?
11-25-2006, 10:50 AM
EnJoY

Quote:

Originally Posted by Tony

and say what?

Haha, yea really. Get them to increase their voltage tolerances on their memory? Not really anymore possible, as the precautions have already been taken to their extent.

Btw Tony, you forgot to send me a sample of your new watercooled stuff. Did you lose my shipping addy? :p: :rolleyes:
11-25-2006, 10:54 AM
nn_step

Quote:

Originally Posted by Tony

and say what?

increase capacity and decrease latency.
11-25-2006, 11:02 AM
DeToNaToR.cl

I was just using my mem at 2.25v without fan for the moment, and it really gets hot... more than my ol BH5...
11-25-2006, 11:52 AM
Kunaak

I've taken ram up to 3.5 volts... test ram, crap ram that I used for exactly that kinda thing... testing.

I killed it in less then 2 minutes. boot up, set the voltage, reboot, get back into bios, take the 3.5 volt bios shot, shut down.... and ram was dead.
I didnt think the ram would be that fast to die, even for crap ram.
but it did.
I always keep a set of crap junk ram for this kinda thing, so this only cost me $40 to do. that ram probably had about 100 hours of total testing on it, in the 3 volt range.
(testing voltage mods and stability and such)

I took my Mushkin 6400 to 3.47 volts to get the Cas 3-3-3 WR at 1060 mhz.
would I do it again? hellllllllll no.
I said that in my post, you want the WR, its yours.
once at 3.4 is enough for me ;)

I am just glad the ram is alive, OC'n well and seems normal.
but I dont intend to do anything like that to this ram again.

while I've obviously went above and beyond the call of duty when overclocking my ram...
I know 1 thing... 2.3 volts on DDR2 is alot, and gets hot fast.
I keep it below 2.25 everyday no matter what.

I will go beyond the limits for a OC.
but at the end of the day, I still need ram that works, and I think it's foolish to go beyond 2.4 for daily use, unless you have no intention of having that ram live long.
11-25-2006, 12:31 PM
The Nemesis

Hope everyone who's bought Corsair UL's in the past few weeks are reading this. Many user's planned on running 2.5-2.6v to get 4-3-2-X DDR2-1000. I was one of them, ran my 8000UL's 4-3-2-4 @ 504mhz 2.55v for over 12 hours with memtest. They still work, but I guess I won't do that again.
11-25-2006, 06:24 PM
Progerien

Quote:

Originally Posted by Tony

2.5V is right on the border of being safe...run more and you will kill your dimms in under a week.

I have seen quite a few quoting they killed DDR2 while benching now, remember you juice it up you take the risk.

T

Do you know the chips of your memory stick ?
Is it micron D9 ??
Because some memory don't like volt at all (like samsung chips) but Micron D9 loves it ^^

My D9GMH runs at 2.45v with 80mm fan for all days computing :) without any problem :/ I see better OC recently :/ certainly the winter xD
My infineon chips was running at 2.45v (mobo max) without any fan, but this ram sucks :slapass:

I don't know the max for all day computing of D9 chips :( but that's seem to be lower than 3.0v :D But better than 2.50v

Sorry for my bad english :)

Sincerely,
11-25-2006, 08:43 PM
STEvil

Just like TCCD/5 mostly topped out at about 2.7v and BH-5/6 around 3.7v for 24/7 use..

Some DDR2 will do 2.8v probably, rest will be closer to 2.1v..
11-25-2006, 09:46 PM
Eldonko

2.5v is the new 3.5v :D
11-26-2006, 12:38 AM
fhpchris

Quote:

Originally Posted by The Nemesis

Hope everyone who's bought Corsair UL's in the past few weeks are reading this. Many user's planned on running 2.5-2.6v to get 4-3-2-X DDR2-1000. I was one of them, ran my 8000UL's 4-3-2-4 @ 504mhz 2.55v for over 12 hours with memtest. They still work, but I guess I won't do that again.

I do not see how 2.55v is that bad, sure your ram can die at this voltage, but if they have decent cooling I would think they would be fine.

I ran my fatbodies @ 2.67-8v to get 400 3-2-2-x ;)
My D9GMH has seen 400 @ 3-3-2 with that voltage.

I have always ran 2.4-2.45 for 24-7, so benching with more just seemed natural. I would not recommend going over 2.45-2.55v for 24-7 use even though I have never heard of people killing D9DQT/D9DQW.
12-05-2006, 02:08 PM
tiborrr

I don't know, i wouldn't push D9's nor Aeneons over 2.30V for 24/7. RAM is too expensive at the moment to afford yourself ending up with a faulty ram stick :D
12-05-2006, 02:14 PM
.sentinel

Quote:

Originally Posted by Progerien

Do you know the chips of your memory stick ?
Is it micron D9 ??
Because some memory don't like volt at all (like samsung chips) but Micron D9 loves it ^^

My D9GMH runs at 2.45v with 80mm fan for all days computing :) without any problem :/ I see better OC recently :/ certainly the winter xD
My infineon chips was running at 2.45v (mobo max) without any fan, but this ram sucks :slapass:

I don't know the max for all day computing of D9 chips :( but that's seem to be lower than 3.0v :D But better than 2.50v

Sorry for my bad english :)

Sincerely,

You do know he works at OCZ right?
12-05-2006, 04:29 PM
Praxis1452

Quote:

Originally Posted by Tony

Fatty D9 dies just as fast....voltage shows no mercy ;)

Infact its not the voltage that kills it, you need the increase in voltage to get the memory switching faster, but a by product is more heat and an increase in current used. The increase in current is what kills it as its quite easy to control the heat.

Micron is mad expensive again at this time, if you want to keep it working reduce the vdimm ;)

Fatty D9 is 90nm whereas the newer stuff is 80nm so like with cpu's wouldn't the voltage hurt the Newer ones more atleast a little bit? So fatties do take a bit more voltage? jw
12-05-2006, 05:01 PM
ozzimark

Quote:

Originally Posted by Praxis1452

Fatty D9 is 90nm whereas the newer stuff is 80nm so like with cpu's wouldn't the voltage hurt the Newer ones more atleast a little bit? So fatties do take a bit more voltage? jw

in theory, yes. in practice? who knows
12-05-2006, 05:34 PM
Noob-ftw

My D9GMH ram is set to 2.3V in BIOS and 2.25V with Ai Suite. Is that a safe voltage to run them at 24/7 with a fan 20cm away from it?

I plan on keeping them for 2 years.
12-06-2006, 06:12 AM
DEVIL K-ce

For 24/7 on D9GMH, D9DCD I used 2.3V-2.45V not more ( with 80mm fan on stick's )

For bench 2.7V is good for D9GMH ( Ballistix set )

Also I set 3V with this Ballistix and ram is live, but P5B Delux not :(

Regards

Martin
12-06-2006, 10:16 AM
Entsafter

My 8000ul (fatties) ran 5 months without problems @ 2.65V and no active cooling... (beginn q1 06 - mid q2 06)
After that extreme 24/7 voltage I used only 2.35V, because it was enough for good frequency and latencies...
The only thing to worry is that this increable ram don't run good with p5b del -> only with spd timings... that sucks...
With p5wd2 I didn't have a single problem!
12-06-2006, 10:28 AM
TaPaKaH

may be told this: once ran one of mine 8000UL (FattyD9) through 3.15V (was testing Vmem mod) without any cooling at all - the mem survived, but now OC degraded @ low volts by 20-30MHz :(

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